Portable single-line box girder steam curing device
Through the portable single-line box girder steaming and resting device, the steam generator and temperature control system are used to solve the problem of slow concrete box girder strength formation in low temperature areas in winter, and efficient maintenance effect and cost control are achieved.
Patent Information
- Application Number
- CN202421693627.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In low-temperature areas in winter, during the prefabricated maintenance of concrete box girders, the strength formation is slow, which affects the construction progress, and the existing equipment is inefficient and costly.
A portable single-wire box beam steaming and maintenance device is designed, including a steaming and maintenance shed, steaming and maintenance pipeline and temperature measuring probe. The steam is provided through a steam generator for full maintenance. Combined with the PLC controller to optimize temperature control, use steel plate-covered polyethylene foam sandwich composite panels to reduce weight and cost.
The required strength is achieved within 1.5-2.5 days, shortening the beam conversion time, reducing costs and improving efficiency, and the device can be detached and reused.
Smart Images
Figure CN223115508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steam curing of single - line box girders. More specifically, the utility model relates to a portable steam curing device for single - line box girders. Background Art
[0002] As an important part of a bridge, a concrete box girder usually needs to be pre - fabricated first. During the pre - fabrication process, the box girder must be cured. In areas with low temperatures during winter construction, such as in the north, the strength of the concrete formed is low and the setting period is long, which is not conducive to improving the pre - fabrication construction progress of the box girder. Therefore, a box girder curing device for low - temperature areas in winter is needed. Summary of the Utility Model
[0003] To achieve these and other advantages according to the present utility model, a preferred embodiment of the present utility model provides a portable steam curing device for single - line box girders. The single - line box girder includes a panel and a U - shaped plate, and the U - shaped plate is connected to the lower surface of the panel. The portable steam curing device for single - line box girders includes:
[0004] A steam curing shed, which covers the single - line box girder. The steam curing shed is composed of a ceiling and side plates, and the side plates are arranged around the side of the ceiling;
[0005] A first steam curing pipeline, which is arranged on the surface of the panel along the length direction of the single - line box girder;
[0006] A second steam curing pipeline, which is arranged in the U - shaped plate along the length direction of the single - line box girder;
[0007] Both the first steam curing pipeline and the second steam curing pipeline are connected to the steam discharge port of a steam generator.
[0008] According to a preferred embodiment of the present utility model, temperature - measuring probes are arranged inside and on the surfaces of the panel and the U - shaped plate.
[0009] According to a preferred embodiment of the present utility model, the side plates at both ends of the steam curing shed along the length direction of the single - line box girder can be rotated and opened.
[0010] According to a preferred embodiment of the present utility model, it further includes a PLC controller, which is connected to the temperature - measuring probes and also connected to the steam generator.
[0011] According to a preferred embodiment of the present utility model, hanging rings are arranged on the ceiling.
[0012] According to a preferred embodiment of the present utility model, the ceiling is composed of square tubes and composite plates. A number of square tubes are laid on the composite plates, and the composite plates are composed of a polyethylene foam board and steel plates sandwiched on both sides thereof.
[0013] The utility model has at least the following beneficial effects: The curing device of the utility model can reach the required strength in 1.5 - 2.5 days (usually 4 - 5 days). The beam manufacturing conversion time is greatly reduced. The combination with the product of steel plate clad polyethylene foam sandwich composite board is convenient and lightweight, and the cost expenditure is minimized to the greatest extent. This device can also be spliced, disassembled and reused cyclically.
[0014] Other advantages, objectives and features of the utility model will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is the top view of the portable single - line box girder curing device in the utility model;
[0016] Figure 2 It is the sectional view of the portable single - line box girder curing device in the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following further describes the utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.
[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be applied to other implementation schemes, deformation schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.
[0019] Those skilled in the art should understand that in the disclosure of the utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations of the utility model.
[0020] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the number.
[0021] Such as Figure 1-2As shown, a preferred embodiment of the utility model provides a portable single-line box girder steaming device, the single-line box girder comprises a panel 1 and a U-shaped plate 2, the U-shaped plate 2 is connected to the lower surface of the panel 1, and the portable single-line box girder steaming device comprises:
[0022] The steaming shed 3, whose cover is arranged on the single-line box beam, specifically, is arranged on the panel, and the steaming shed is composed of a ceiling and side panels, and the side panels are arranged around the side edges of the ceiling;
[0023] A first steaming pipe 4, which is arranged on the surface of the panel along the length direction of the single-line box girder;
[0024] The second steaming pipe 5 is arranged in the U-shaped plate along the length direction of the single-line box girder;
[0025] The first steaming and curing pipeline 4 and the second steaming and curing pipeline 5 are both connected to the steam outlet of the steam generator 6 .
[0026] In the above technical solution, the steam generator 6 provides steam for the first steaming and curing pipe 4 and the second steaming and curing pipe 5. The first steaming and curing pipe 4 is used to steam-cured the panel of the box girder, and the second steaming and curing pipe 5 is used to steam-cured the U-shaped plate. In this way, all-round steam curing can be carried out on the structure of the single-line box girder, with good curing effect and high efficiency.
[0027] The ceiling and side panels of the steaming shed are spliced to facilitate real-time adjustment according to actual conditions during maintenance.
[0028] According to a preferred embodiment of the present invention, temperature measuring probes are provided inside and on the surface of the panel 3 and the U-shaped plate 4 in order to test the surface and internal temperature of the concrete.
[0029] According to a preferred embodiment of the utility model, the side panels at both ends of the steaming shed along the length direction of the single-line box girder can be rotated and opened.
[0030] In the above technical solution, when the strength of the beam reaches the pre-initial tension strength, the curing cover should not be removed immediately. Ventilation should be carried out by opening both ends to reduce the difference between the surface temperature of the beam and the ambient temperature to within 15 degrees Celsius before the curing cover can be removed. This can prevent shrinkage cracks on the concrete surface.
[0031] According to a preferred embodiment of the present invention, it also includes a PLC controller, which is connected to the temperature measuring probe and the steam generator.
[0032] The steam emitter is opened and closed according to the temperature measured by the temperature probe. In order to meet the design specifications, the temperature of the concrete core is not higher than 60 degrees Celsius. When the internal temperature of the panel or U-shaped plate reaches 60°C, the PLC controller controls the steam emitter to close.
[0033] According to a preferred embodiment of the present utility model, hanging rings are provided on the ceiling, which facilitates the lifting during construction operations.
[0034] According to a preferred embodiment of the present utility model, the ceiling is composed of square tubes and composite plates. A number of square tubes are laid on the composite plates, and the composite plates are composed of a polyethylene foam board and steel plates clamped on both sides thereof. The composite plates can not only reduce the weight of the lifting device and the working intensity of the gantry crane, but also ensure the temperature and humidity inside the chamber.
[0035] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated and described examples here.
Claims
1. A portable steam curing device for single-line box girders. The single-line box girder includes a panel and a U-shaped plate, and the U-shaped plate is connected to the lower surface of the panel. It is characterized in that, The portable single-line box girder steam curing device includes: A steam curing shed, which covers the single-line box girder. The steam curing shed is formed by splicing a ceiling and side plates, and the side plates are arranged around the side of the ceiling; A first steam curing pipeline, which is arranged on the surface of the panel along the length direction of the single-line box girder; A second steam curing pipeline, which is arranged in the U-shaped plate along the length direction of the single-line box girder; Both the first steam curing pipeline and the second steam curing pipeline are connected to the steam discharge port of the steam generator.
2. The portable single-line box girder steam curing device according to claim 1, wherein Temperature measuring probes are arranged inside and on the surface of the panel and the U-shaped plate.
3. The portable single-line box girder steam curing device according to claim 1, characterized in that, The side plates at both ends of the steam curing shed along the length direction of the single-line box girder can be rotated and opened.
4. The portable single-line box girder steam curing device according to claim 2, wherein, It also includes a PLC controller, which is connected to the temperature measuring probe and also connected to the steam generator.
5. The portable single-line box girder steam curing device according to claim 1, characterized in that, Hanging rings are arranged on the ceiling.
6. The portable single-line box girder steam curing device according to claim 1, wherein, The ceiling is composed of square tubes and composite plates. A number of square tubes are laid on the composite plates, and the composite plates are composed of a polyethylene foam board and steel plates clamped on both sides thereof.